/* 后台管理头部和左半部分导航栏的css样式 */
.box{
    height:100%;
    background: white;
    /* overflow:hidden; */
    
}
.box_head{
    width:100%;
    height:60px;
    background-color: rgb(15, 160, 218);
}
.head_left{
    color:white;
    font-size:30px;
    position: relative;
    left:20px;
    top:10px;
}
.exit{
    border:none;
    background:  rgb(15, 160, 218);
    color:white;
    font-size: 13px;
    float: right;
    margin-right:-100px;
    margin-top:25px;
}
.head_right{
    color: white;
    font-size:13px;
    float: right;
    margin-right:100px;
    margin-top:25px;
    border:none;
    background: none;
}
.exit:hover{
    cursor:pointer;
}
.box_body{
    width:100%;
    height:95em;
}
.body_left {
    width:200px; 
    margin-top: 10px;
    border-right: 1px solid silver;
}
#menu{
    width:200px;
    height:50px;
    margin-top:10px;
    margin-left: 35px;
    color:silver;
}
.body_left ul{
    width:200px;
    display: block;
    margin-left: 15px;
    padding-top: 5px;

}
.body_left ul li {
    list-style:none;
    width:200px;
    height:50px;
    margin-top:10px;
    line-height: 30px;
}
/* li a:active{
    border-bottom: 2px solid rgb(106, 177, 243);
}
li a button{
    border:none;
    background: none;
} */
button:hover{
    cursor:pointer;
}